code: def test_run_with_meta(self, test_files_path):
      bytestream = ByteStream(
          data=b"test", meta={"author": "test_author", "language": "en"}
      )
  
      converter = TikaDocumentConverter()
      with patch(
          "haystack.components.converters.tika.tika_parser.from_buffer"
      ):
          output = converter.run(
              sources=[
                  bytestream,
                  test_files_path / "markdown" / "sample.md",
              ],
              meta={"language": "it"},
          )
  
      # check that the metadata from the sources is merged with that from the meta parameter
      assert output["documents"][0].meta["author"] == "test_author"
      assert output["documents"][0].meta["language"] == "it"
      assert output["documents"][1].meta["language"] == "it"
  
file_path: haystack/test/components/converters/test_tika_doc_converter.py
imports: from unittest.mock import patch
  import pytest
  from haystack.dataclasses import ByteStream
  from haystack.components.converters.tika import TikaDocumentConverter
label_desc: Use image node_id 2 for calling the TestTikaDocumentConverter obj's underlying member method code with example usage: obj.test_run_with_meta(test_files_path) without return types